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rockhouse 04-19-2008 04:57 PM

package units in attic? any input please?
I'm getting ready to replace 3 package units on a flat roof at my restaurant.
2 are 3 ton and the other a 5 ton. My main question is, I'm looking at putting a conventional pitched roof over the flat roof(estimated 6/12 pitch), I will have about 6ft. to 7ft. from flat roof to peak of new roof. Can I still use the package units or do I need to go to a split unit. I've been told I can do either. Any help greatly appreciated! I know I will be fighting heat in the attic for ac, thought about putting powered vents in or leaving the ends of the roof open. I'm wanting to get away from the flat roof and cosmetically the pitched will make restaurant look better. I'm looking at goodman units,
15SEER 410 for ac and gas for furnace. One HVAC says split one says I can use package units.
Thanks, Rockhouse

biggles 04-20-2008 07:04 AM

if you can vent the attic to supply the condensers,and then duct it out you can go with packages..just keep in mind service on them especially if you need a compressor or fans changed.that discharge on the condenser is the the biggest nut there,the air in the attic if kept near the days temp will to get that air thru the condenser and out as if the units were still on a flat roof.

rockhouse 04-21-2008 08:22 AM

Biggles, thanks for the info. I had one hvac guy tell me that and the other said no way. I thought it would work, but if I was hvac man i wouldn't be on here. Thanks again and have a great day!

coolmen 04-25-2008 09:26 AM

to place a condenser in a attic is gonna be bad idea. this is not the norm and unless a mfg. of the equipment says it s OK you will eat the unit when it fails due to extrem temps created from the sun and the discharge temps. those temp could be asbored back into the building if not well insulated.ANY THING is possible to do as long as it is enginered to work. you must calculate .

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